showing the file extensions more visible by default. I still think it's shitty design, but I get worse nightmares over thinking that showing file extensions would become a configuration option.

files/css/files.css

@@ -42,8 +42,8 @@ tbody tr:hover, tbody tr:active, tbody tr.selected { background-color:#f8f8f8; }
 tbody tr.selected { background-color:#eee; }
 tbody a { color:#000; }
 span.extension, td.date { color:#999; }
-span.extension { text-transform:lowercase; -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"; filter:alpha(opacity=0); opacity:0; -webkit-transition:opacity 300ms; -moz-transition:opacity 300ms; -o-transition:opacity 300ms; transition:opacity 300ms; }
-tr:hover span.extension { -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=100)"; filter:alpha(opacity=100); opacity:1; }
+span.extension { text-transform:lowercase; -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=70)"; filter:alpha(opacity=70); opacity:.7; -webkit-transition:opacity 300ms; -moz-transition:opacity 300ms; -o-transition:opacity 300ms; transition:opacity 300ms; }
+tr:hover span.extension { -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=100)"; filter:alpha(opacity=100); opacity:1; color:#777; }
 div.crumb { float:left; display:block; background:no-repeat right 0; padding:.75em 1.5em 0 1em; height:2.9em; }
 div.crumb:first-child { padding-left:1em; }
 div.crumb.last { font-weight:bold; }